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DUPLEX D8400 Parts and Accessories
Clevite P-Series Rod Bearings
P-Series rod bearings are the oldest members of the Clevite 77 performance bearing family. They're intended for high-revving engines, especially those where the high rpm cause the rod bores to narrow. To compensate for this distortion, these direct replacements have higher eccentricity and a high crush factor. Clevite P-Series rod bearings are built on hardened-steel backings with extra-thin overlays, and their lower sections have dowel holes for use with aluminum rods, and there are extra-clearance variations available with an additional 0.001 in. of clearance. Order the model designed for your vehicle and engine application.
( 312 )
$16.99
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$39.99
MotoRad Thermostats
All thermostats are not created equal. MotoRad thermostats offer superior, consistent performance that begins at the heart of their design. The ELAC heat motor, with its unique properties, provides a precise response to your vehicle's cooling system needs. Powered by a precisely formulated thermal-responsive wax pellet in a heat-conducting copper cup equipped with a stainless steel piston, the heat motor is 100 percent calibrated to ensure quality and performance. MotoRad encases the motor in a stainless steel assembly with a self-cleaning, self-aligning valve, flange, bridge, and spring for a securely sealed unit that will keep your engine temperature within OEM specifications. All thermostats are not alike; so, when you want a well-engineered product, look for MotoRad thermostats.
( 7 )
$25.99
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$28.99
MotoRad HD Thermostats
MotoRad offers HD thermostats for a variety of medium/heavy truck applications from the 1980s and up. They feature high-grade stainless steel and copper construction, and are 100 percent tested and calibrated for consistent, precise response to your cooling system needs. The thermostats provide an OE design for worry-free direct-fit replacement; they meet or exceed factory standards. Order the model recommended for your vehicle.
Not Yet Reviewed
$29.99
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$34.99
Summit Bucks
Delphi Fuel Injectors
Delphi fuel injectors are engineered with an accurate, controlled spray pattern that reduces emissions and improves cold-start capabilities. These replacement injectors have a recessed fuel exit and no internal seal rings—in order to minimize leakage and possible puddling. Delphi fuel injectors are durable, dependable, and offered for a wide variety of applications. Order the OEM stock replacements designed for your vehicle.
( 11 )
$319.99
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$328.99
MotoRad Coolant Temperature Sensors
MotoRad coolant temperature sensors measure changes within the cooling system of a vehicle. This continuous measurement goes to the vehicle's powertrain control module (PCU) in order to help manage fuel injection, ignition timing, variable valve timing, and transmission shifting. MotoRad uses only the highest quality, OEM-approved premium materials and 100 percent factory resistance calibrated to ensure precision tolerances, resulting in highly accurate readings for optimal performance. A wide variety of MotoRad coolant temperature sensors ensure that most domestic and import applications are covered.
( 1 )
$21.99
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$39.99
MotoRad Integrated Housing Thermostats
MotoRad offers integrated housing thermostats for a variety of car and truck applications from the 1990s and up. They feature high-grade stainless steel and copper construction, and are 100 percent tested and calibrated for consistent, precise response to your cooling system needs. The thermostats provide an OE design for worry-free direct-fit replacement; they meet or exceed factory standards. Order the model recommended for your vehicle.
( 1 )
$29.99
Fairchild Industries Weatherstrip Seals
Fairchild Industries, a trusted automotive OEM supplier, manufactures weatherstrip seals utilizing quality commercial-grade materials and high-tech reverse engineering—for superior form, fit, and function on many vehicle applications. These weatherstrip seals will produce a smooth, sleek, jet-black, non-fade finish that adds value to your ride—while sealing and protecting particular sections of your vehicle from the outdoor elements, and reducing drafts and road noise. Order the Fairchild replacement weatherstrip seals designed your for vehicle and specific locations.
( 419 )
$26.99
US Motor Works Mechanical Water Pumps
All US Motor Works mechanical water pumps are designed and tested to meet or exceed OEM specifications. Using advanced research, they include efficient impellers, case-hardened bearings, and unitized seals to provide optimum cooling with performance and longevity. Every US Motor Works mechanical water pump is supplied with a quality mounting gasket and other accessories (seals/gaskets) necessary to properly complete the installation. US Motor Works mechanical water pumps feature: * Case hardened bearings that meet specific radial torque and axial load requirements; they have higher load capacities, are tough on the outside, yet flexible on the inside … ideal for withstanding imbalance or vibration * All mounting surfaces are CNC-machined for easy installation, precision sealing, long component life, and maximum efficiency * Inspected and tested to ISO: 9001:2015 standards * Industry-leading metal impeller integration; metal impellers handle more torque and higher temperatures than plastic to improve high-rpm performance and combat failure caused by broken or distorted impellers * Highly durable metal impellers are also chemical-resistant, withstand variables in high-mileage engines, and are better for transit and storage
( 55 )
$162.99
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$456.99
On Sale
Bully Dog Exhaust Manifolds
Bully Dog exhaust manifolds provide a considerable upgrade from old stock manifolds, thanks to all of their notable features. Their high-flowing, state-of-the-art CAD design provides quicker turbo spool, higher power output, and more fuel economy for Class 8 engines. They feature ceramic coating inside and out to ensure engine heat is more extensively utilized to spin the turbo. This means the special metal alloy beneath the coating will absorb and radiate less heat—up to 300 degrees less coming off the manifolds. Bully Dog exhaust manifolds not only look great, but they're fine-tuned in every aspect to improve the performance of your engine. Order the model recommended for your specific vehicle and engine size. Features, parts, and specs may include: * 80 to 100 degree reduced exhaust gas temperatures (EGTs) * Up to 30 hp increase * Up to 18 percent more airflow over stock due to tighter tolerances, porting, and polishing * 3-piece design ensures matching expansion/contraction with engine heat * Thicker walls than stock for greater durability and ceramic coating help lengthen gasket life * Engineered to eliminate known failure points for greater durability * Turbo studs (depending on application)
( 2 )
$1,975.00
$1,876.25
On Sale
Bully Dog Big Rig Turbochargers
Engineered for commercial diesel operators, Bully Dog Big Rig Turbochargers deliver reliable power, responsive acceleration, and lasting performance in heavy-duty truck applications. Available for a wide range of Cummins, Caterpillar, Detroit Diesel, Mack, and PACCAR engines, these premium turbochargers feature high-quality components, precision-balanced rotating assemblies, and advanced airflow designs. These features help to reduce turbo lag, improve boost efficiency, lower exhaust gas temperatures, and enhance overall drivability. Many models include matched actuators for straightforward installation and OE-style fitment, making them dependable replacements or performance upgrades for fleets and owner-operators. Whether hauling heavy loads over long distances or maximizing uptime on the job, the Bully Dog Big Rig Turbochargers provide the durability, efficiency, and consistent performance serious diesel operators demand every mile of the journey. Select the turbo model that matches your specific engine type and specs.
Not Yet Reviewed
$1,800.00
$1,620.00
Bostech Water Pumps
Bostech water pumps are manufactured with the highest quality materials for optimum performance and durability. Each pump is multi-point tested and quality control inspected before being packaged under the Bostech brand.
Not Yet Reviewed
$473.79
Dayco Water Pumps
Backed by an industry-leading 125,000 mile warranty, Dayco's water pumps are available in cast aluminum or iron version and are offered in application-specific designs for more than 200 million vehicles in operation. Meeting the highest standards, they are put to the test utilizing a unique failure mode analysis for continuous improvement. In addition, Dayco controls every aspect of the manufacturing process, from raw material to finished product of these OE-equivalent water pumps. Features: * Durable one-piece design * Improved impeller for enhanced performance * Case-hardened roller bearings that allow for flex without breaking * Superior gaskets and unitized seals to prevent leaks
( 8 )
$80.99
